Sash-cord pulley.



No. 709,000. Patented Sept. [6; I902..

' .P. noscn.

SASH com) PULLEY.

(Application filed May 14, 1902.) (No Model.)

UNITED STATES PATENT OFFICE.

PETER DOSCII, OF YONKERS, NEW YORK.

SASH-CORD PU LLEY.

SPECIFICATION forming part of Letters Patent No. 709,000, datedSeptember 16, 1902.

Application filed May 14,1902. Serial Ila-107L243. (No model.)

.ings, in which- Figure 1 illustrates a front view of the faceplate.Fig. 2 illustrates an edgewise or side view of the face-plate. .Fig. 3illustrates a sash-pulley complete embodying my invention, all the partsbeing assembled. Fig. 4. illustrates a rear edgewise view, partly insection, of the wheel and its casing and certain of the coacting parts.Fig. 5 illustrates a view similar to Fig. 4, showing a casing or supportfor the wheel only. Fig. 6 illustrates a side view of one-halfof thewheel-casing before the terminal parts have been bent.

A is the face-plate. In the first instance it is a flat piece ofsheet-steel. The first operation is to cut from its central part twotongues B G, to bend downwardly the lower end D, then punch a hole E andanother F and cut out from the tongue 0 certain recesses in its edges GG and from the tongue B certain slots H. These tongues B and O are thenbent inwardly, as shown in Fig. 2, at right angles to theplane of theface-plate A.

The wheel-supportingframe (see Fig. 6) is made in two parts I I. Theyare punched out of sheet-steel or equivalent metal in the formsh0wn-that is to say, in a curved or flattened V-shaped outline. Theupper end is slit into three parts a a. and a central part b, and belowthese there are other parts 0 a cut out, and at the lower end there is asingle tongue cl. In order to stiffen these side frames, I so shape thedies as to throw up ribs or partial flanges on their edges e e, and inthe center of these side frames I strike up a hubf and simultaneouslypunch a hole g. The wheelI make in two identical parts, (see Figs. 3 and4,) likewise of sheet metal, 71 h, with the groove 'i, to receive thecord of the sash, half in each part of the wheel and the hub j having ahole through it. The two parts of the wheel are rigidly secured togetherby rivets 7c.

The method of assemblingthe parts may be as follows: The wheel is firstplaced between the two side pieces I I of the frame, the hub of thewheel restingwithin the hub of the frame. A rivetZ is then passedthrough the hole in the side frames and in the wheel and headed. Thelower ends a a of the side frames are then passed through the slotsHH inthe tongue B of the face-plate, the upper ends of the frame being sprungslightly apart,so that they can be pressed up close to the face-plateand enter thdrecesses G Gin the edges of the tongue 0. I purposely makethis recess tapering from the face-plate outwardly, so that the upperends of the side frames will be slightlysprung or twisted, whereby theiredges which are adjacent to the faceplate are turned outwardly orbell-shaped to a slight degree,thus avoiding abradin g the cord. Therecesses G may, however, be square or any other preferred form. When theparts are in this position, the little tongues c c at the upper end ofthe side frames and the tongue d at the lower end are forced outwardlyby suitable apparatus, so as to lock the side frames to the tongues Oand B, as shown. Thereupon the slit parts a a (see Figs. 4c and 6) arebent over upon the upper surface of the tongue 0, thus securely holdingthe wheel-supporting frame to the faceplate and making a rigid strongpermanent structure. The rivet l is not the axis upon which the wheelrevolves. On the contrary, the hole in the sides of the wheel; throughwhich the rivet passes is somewhat larger than the rivet, and the wheelrevolves onthe outer surface of its hub, which engages withthe innersurface of the hub in the side frames. This is a material improvement.The area of the surface is such that it gives much greater stability tothe wheel, secures good smooth movement, and greatly increases the lifeof the pulley. The lower end D of the face-plate is pressed inwardly atthe angle shown in order that it may enter an undercut or dovetailedrecess K, made in the window-framing, thus doing away with the necessityof any confining means, such as a screw, at the lower end of the pulley.The upper .end of the pulley may be confined by a screw M, passingthrough the hole E, (see Fig. 3,) or'the cen-- tral tongue I) at theupper end of the side frames may be forced upwardly into the wood of thewindow-frame, as shown in Figs. 3 and.

4E, and in order that this maybe effected I make the hole F in theface-plate. (See Fig. 1.) Through this hole a nail set may beintroduced, and then a single blow from a hammer will force the twotongues Z) l) of the side frames, which had previously been bent overupon the surface of the tongue 0, upwardly and into the wood of theframe. Another way of accomplishing this object is as follows: Thetongue .0 may have slits, as shown at N, and this tongue be forcedupwardly and caused to enter the wood of-the window-frame L, the upperpart of the side frames in the section occupied by the little tongue bbeing cut away to permit this tongue to pass up wardly and enter thewood.

Itwill be observed that my sash-pulley differs from any of thesheet-metal pulleys heretofore made in several important particulars,which will be pointed outin the claimshereof, whereby I secure greaterstrength and more handsome appearanceand greater easein application. Mypulleys are likewise inexpensive to construct.

It will be obvious to those who are familiar with this art thatmodification may be made in the details of construction of my inventionwithout departing from the essentials thereof. I therefore do not limitmyself to such details.

Having described my invention, I claim 1. The combination in asashpulley of a face-plate having an upper and lower tongue out from theface-plate itself, provided with means for supporting the wheel-frameand a hole made in one of the tongues for the insertion of a toolwhereby a portion of the structure may be forced into the wood of thewindow-frame.

2. The combination in a sash-pulley of a face-plate having a tongue outtherefrom and arranged at substantially right angles thereto, a portionof the tongue being slit so as to' afford a part adapted to be forcedinto the Wood of the frame for the confinement of the pulley.

3. The combination in a sash-pulley of a face-plate having a tongue outtherefrom and arranged at substantially right angles thereto, aninclined recess at or near the junction between the tongue and theface-plate whereby the sides of the wheel-supporti ng frame will bethrown outwardly or bell-mouthed, for the purpose set forth.

4. The face-plate of a pulley having one end bent downwardly at an angleadapted to enter a similarly-shaped recess in the wood of the frame anda part of the metal constituting the face-plate adapted to be forcedinto the wood of the frame after the pulley is set.

5. In a sash-pulley the combination of a wheel-supporting frameembodying side bars, each made of angular form, whereby their ends areadapted to engage with and be supported by devices attached to theface-plate and located adjacent to the face-plate, said side bars havinga projecting central part adapted to properlysupport the pulley-wheel.

(3. In a sash-pulley the combination of a wheel-s11 pporting frameembodying two side bars, the edges whereof are reinforced by flanges orribs and the ends whereof are adapted to engage with tongues cut fromthe faceplate and arranged at substantially right angles thereto andsaid tongues themselves.

7. In a sash-pulley the combination of a wheel-supporting frameembodying side bars having a hub-shaped recess formed at or near theircentral portion adapted to receive a similarly-shaped hub formed on thewheel, and flanges or ribs formed on the edges of the said side frameswhereby they are stiffened.

8. In a saslrpulley the combination of a wheel made in two partsfastened together and having a hub at its central portion and awheel-supporting frame embodying two lateral oars having a hub-shapedrecess formed at or near their central part and integral therewithadapted to receive the hub of the wheel and a rivet connecting the twoside bars together through an opening in the hub of the wheel.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses, this 28th day of April, 1902.

PETER DOSOII.

Witnesses:

PHILLIPS ABBOTT, F. M. DONSBACH.

